Buying another Glock has nothing to do with liberty. .
When the police are more militarized than the military, when the government listens in on your phone calls and literally reads your emails, arming yourself has EVERYTHING to do with liberty.
But you? Bow down to your masters.
Buying a handgun, will not defend you from an over militarised police. It won't even defend you from normal police. There are lots more of them around. You may shoot one but they will get you.The same could be said about any weapons system less than the maximum force your chosen foe can point back at you.
All carrying that nice Glock or AR15 will do for you is identify you as a potential hostile,
It will not remove your tax liabilities - It may mean that the IRS carries bigger guns when they talk to you. If they don't have big enough guns, they will ask the police for help. If they can't, there are plenty of uniforms, tanks, planes Aircraft Carriers and so on. You are a civilian. You will loose.
It will not protect you from the RedCoats either. They will just pass you back to the USA to get a free pass to Gitmo.
The Russians aren't worried by your right to arm bears either(1). Their military is not as gentle towards civilians as yours. Ask any Chechnyan.
If you are lucky, your toys will drive a debt collector away. That might give you a few days of respite but they will be back with help...
(1) Arming bears is a whole lot less dangerous than bearing arms.